I wanted to extract Legends of Wrestling 1 and tried already Xiso v1.10 and also XDFSExtract and xbox isotool but whenever he wants to extract it, it gives some kinda memory error in the imgae. Anyone has notice this same problem.

When you download the ISO rather than the RAR files, the chances are far higher that it will end up being corrupt. Typically the download stops and resumes many times, increasing the chance of an improper resume. When you download the RARs, you can just check the SFV and know for sure if any are bad. Then you just replace those files (if any).